CMF9 

CMF9, a cyclic peptide molecule, is an inhibitor of the SMAD2-SMAD4 interaction. CMF9 effectively blocks the formation of the heterodimeric complex of SMAD2 and SMAD4 by inhibiting the phosphorylation of SMAD2. CMF9 has no effect on the phosphorylation of SMAD3 or SMAD1/5/8. CMF9 downregulates the expression of fibrotic markers α-SMA and COL1A1. CMF9 exhibits potent anti-fibrotic effects in mouse models by promoting the degradation of pathological extracellular matrix (ECM) and inhibiting inflammation. CMF9 can be used for the study of liver fibrosis^[1].

1163.24

C₅₃H₇₄N₁₄O₁₆

Solid

White to off-white

cyclo(Thr-Arg-Pro-Ala-Ser-{d-Phe}-Trp-Glu-Thr-Ser)

cyclo(TRPAS-{d-Phe}-WETS)

Room temperature in continental US; may vary elsewhere.

Sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

• [1]. Cheng W, et al. Discovery of Novel Cyclic Peptides as SMAD2-SMAD4 Interaction Inhibitors for the Treatment of Hepatic Fibrosis. J Med Chem. 2025 May 22;68(10):9958-9972.  [Content Brief]